gdb/common/filestuff.h

   1 /* Low-level file-handling.
   2    Copyright (C) 2012-2014 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef FILESTUFF_H
  20 #define FILESTUFF_H
  21
  22 /* Note all the file descriptors which are open when this is called.
  23    These file descriptors will not be closed by close_most_fds.  */
  24
  25 extern void notice_open_fds (void);
  26
  27 /* Mark a file descriptor as inheritable across an exec.  */
  28
  29 extern void mark_fd_no_cloexec (int fd);
  30
  31 /* Mark a file descriptor as no longer being inheritable across an
  32    exec.  This is only meaningful when FD was previously passed to
  33    mark_fd_no_cloexec.  */
  34
  35 extern void unmark_fd_no_cloexec (int fd);
  36
  37 /* Close all open file descriptors other than those marked by
  38    'notice_open_fds', and stdin, stdout, and stderr.  Errors that
  39    occur while closing are ignored.  */
  40
  41 extern void close_most_fds (void);
  42
  43 /* Like 'open', but ensures that the returned file descriptor has the
  44    close-on-exec flag set.  */
  45
  46 extern int gdb_open_cloexec (const char *filename, int flags,
  47                              /* mode_t */ unsigned long mode);
  48
  49 /* Like 'fopen', but ensures that the returned file descriptor has the
  50    close-on-exec flag set.  */
  51
  52 extern FILE *gdb_fopen_cloexec (const char *filename, const char *opentype);
  53
  54 /* Like 'socketpair', but ensures that the returned file descriptors
  55    have the close-on-exec flag set.  */
  56
  57 extern int gdb_socketpair_cloexec (int namespace, int style, int protocol,
  58                                    int filedes[2]);
  59
  60 /* Like 'socket', but ensures that the returned file descriptor has
  61    the close-on-exec flag set.  */
  62
  63 extern int gdb_socket_cloexec (int namespace, int style, int protocol);
  64
  65 /* Like 'pipe', but ensures that the returned file descriptors have
  66    the close-on-exec flag set.  */
  67
  68 extern int gdb_pipe_cloexec (int filedes[2]);
  69
  70 #endif /* FILESTUFF_H */